JPS55130000A - Memory unit - Google Patents

Memory unit

Info

Publication number
JPS55130000A
JPS55130000A JP3747579A JP3747579A JPS55130000A JP S55130000 A JPS55130000 A JP S55130000A JP 3747579 A JP3747579 A JP 3747579A JP 3747579 A JP3747579 A JP 3747579A JP S55130000 A JPS55130000 A JP S55130000A
Authority
JP
Japan
Prior art keywords
codes
reset
key information
memory
contents
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3747579A
Other languages
English (en)
Other versions
JPS594799B2 (ja
Inventor
Hisanori Hamano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP54037475A priority Critical patent/JPS594799B2/ja
Publication of JPS55130000A publication Critical patent/JPS55130000A/ja
Publication of JPS594799B2 publication Critical patent/JPS594799B2/ja
Expired legal-status Critical Current

Links

JP54037475A 1979-03-26 1979-03-26 メモリ装置 Expired JPS594799B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54037475A JPS594799B2 (ja) 1979-03-26 1979-03-26 メモリ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54037475A JPS594799B2 (ja) 1979-03-26 1979-03-26 メモリ装置

Publications (2)

Publication Number Publication Date
JPS55130000A true JPS55130000A (en) 1980-10-08
JPS594799B2 JPS594799B2 (ja) 1984-01-31

Family

ID=12498539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54037475A Expired JPS594799B2 (ja) 1979-03-26 1979-03-26 メモリ装置

Country Status (1)

Country Link
JP (1) JPS594799B2 (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135500A (en) * 1981-02-16 1982-08-21 Nec Corp Data memory protecting circuit
JPS58200345A (ja) * 1982-05-17 1983-11-21 Hitachi Ltd １チツプマイクロコンピユ−タ
JPS5956300A (ja) * 1982-09-22 1984-03-31 Meisei Electric Co Ltd メモリ−プロテクト方式
JPS59232395A (ja) * 1983-06-16 1984-12-27 ヤマハ株式会社 楽音設定装置
JPS61134825A (ja) * 1984-12-05 1986-06-21 Nec Corp マイクロプロセツサ
JPS6273349A (ja) * 1985-09-27 1987-04-04 Toshiba Corp 半導体記憶装置
JPS6275851A (ja) * 1985-09-30 1987-04-07 Toshiba Corp 半導体記憶装置
JPS63236141A (ja) * 1987-03-25 1988-10-03 Fuji Electric Co Ltd モニタ装置
JPH021019A (ja) * 1988-12-02 1990-01-05 Hitachi Ltd １チップマイクロコンピュータ
WO1990013085A1 (en) * 1989-04-20 1990-11-01 Nintendo Co., Ltd. Memory cartridge
JPH03113656A (ja) * 1989-09-28 1991-05-15 Mitsubishi Electric Corp 半導体記憶装置
JPH03276346A (ja) * 1990-03-27 1991-12-06 Nec Corp メモリカード
JPH04205043A (ja) * 1990-11-29 1992-07-27 Mitsubishi Electric Corp 半導体記憶装置

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6230462B2 (ja) * 1981-02-16 1987-07-02 Nippon Electric Co
JPS57135500A (en) * 1981-02-16 1982-08-21 Nec Corp Data memory protecting circuit
JPS58200345A (ja) * 1982-05-17 1983-11-21 Hitachi Ltd １チツプマイクロコンピユ−タ
JPS5956300A (ja) * 1982-09-22 1984-03-31 Meisei Electric Co Ltd メモリ−プロテクト方式
JPS6235701B2 (ja) * 1982-09-22 1987-08-03 Meisei Denki Kk
JPS59232395A (ja) * 1983-06-16 1984-12-27 ヤマハ株式会社 楽音設定装置
JPH0532758B2 (ja) * 1983-06-16 1993-05-17 Yamaha Corp
JPS61134825A (ja) * 1984-12-05 1986-06-21 Nec Corp マイクロプロセツサ
JPH0465403B2 (ja) * 1984-12-05 1992-10-20 Nippon Electric Co
JPS6273349A (ja) * 1985-09-27 1987-04-04 Toshiba Corp 半導体記憶装置
JPS6275851A (ja) * 1985-09-30 1987-04-07 Toshiba Corp 半導体記憶装置
JPS63236141A (ja) * 1987-03-25 1988-10-03 Fuji Electric Co Ltd モニタ装置
JPH021019A (ja) * 1988-12-02 1990-01-05 Hitachi Ltd １チップマイクロコンピュータ
JPH0431414B2 (ja) * 1988-12-02 1992-05-26
WO1990013085A1 (en) * 1989-04-20 1990-11-01 Nintendo Co., Ltd. Memory cartridge
US5426763A (en) * 1989-04-20 1995-06-20 Nintendo Co., Ltd. Memory cartridge including a key detector for inhibiting memory access and preventing undesirable write operations
JPH03113656A (ja) * 1989-09-28 1991-05-15 Mitsubishi Electric Corp 半導体記憶装置
JPH03276346A (ja) * 1990-03-27 1991-12-06 Nec Corp メモリカード
JPH04205043A (ja) * 1990-11-29 1992-07-27 Mitsubishi Electric Corp 半導体記憶装置

Also Published As

Publication number Publication date
JPS594799B2 (ja) 1984-01-31

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